Function getTableExpressionAlias

src/Parsers/ASTSelectQuery.cpp:440–450

}

static String getTableExpressionAlias(const ASTTableExpression * table_expression)
{
    if (table_expression->subquery)
        return table_expression->subquery->tryGetAlias();
    if (table_expression->table_function)
        return table_expression->table_function->tryGetAlias();
    if (table_expression->database_and_table_name)
        return table_expression->database_and_table_name->tryGetAlias();

    return String();
}

void ASTSelectQuery::replaceDatabaseAndTable(const String & database_name, const String & table_name)
{